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Synthesis and Coordination Behaviour of a Novel Tridentate P,N,O‐Ketiminate Ligand
Author(s) -
Halz Jan Henrik,
Hentsch Andreas,
Wagner Christoph,
Merzweiler Kurt
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000436
Subject(s) - chemistry , octahedron , ligand (biochemistry) , zonal and meridional , schiff base , aniline , cobalt , medicinal chemistry , pentane , methylene , metal , stereochemistry , copper , coordination complex , crystallography , crystal structure , inorganic chemistry , organic chemistry , biochemistry , receptor , atmospheric sciences , geology
Treatment of o ‐(diphenylphosphino)aniline with 3‐formylacetylacetone led to the formation of the ketimine type Schiff base 3‐(( o ‐diphenylphosphino‐phenylamino)‐methylene)‐pentane‐2,4‐dione ( o −PPh 2 −C 6 H 4 −NH−CH=C(COCH 3 ) 2 , HL). Complexes [ML 2 ] (M=Fe, Co, Ni, Cu) were obtained from the reaction of HL with the corresponding metal acetate or acetylacetonate derivatives. The [ML 2 ] complexes (M=Fe, Co, Ni) exhibit a distorted octahedral coordination from two tridentate P,N,O ketiminate ligands L − . The arrangement of the ligands is meridional in the case of [FeL 2 ] and [NiL 2 ] . The cobalt complex [CoL 2 ] displays a facial coordination. In the case of the nearly square planar copper complex [CuL 2 ], only the ketiminate functionalities of the ligands are involved in coordination and the participation of the PPh 2 groups is neglectable.